Chapter 4.1

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Vocabulary=

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Inorganic: Never was once alive
Crystal: Has flat sides (faces) that meet at sharp edges and corners
Element: Something that is composed of one atom
Compound: More elements combined
Mohs Hardness Scale: A scale ranking the ten most weakest to the hardess
Streak: The color of its powder
Luster: The way it reflects light
Cleavage: A property that describes that the mineral will split easily
Fracture: The way a mineral looks when it breaks
Flourescence: A property that allows some minerals to glow under ultra-violet light

Outline

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*What is a Mineral?
*A mineral is a naturally occuring, inorganic solid that ha:
*Crystal Structure
*Definite Chemical Composition
*Naturally Occuring
*Minerals are always natrually occuring
*Inorganic
*Minerals can't have once been alive
*Solid
*No gas or liquid could be a mineral
*Crystal Structure
*All minerals have crystals
*Definite Chemical Composition
*All the elements that make a mineral have to be chemically joined
*Identifying Minerals
*Each mineral has its own specific propeties that are used to identify it
*Hardness
*All minerals will have different ratings on how hard it is
*Color
*Streak
*The streak can be different from the color
*Luster
*The luster that any mineral has depends on what is in it
*Density
*No matter how much there is of a mineral, it will always weight the same
*Crystal Systems
*Cleavage and Fracture
*Not all minerals have cleavage
*Special Properties
*Some minerals have the property of flourescence, which makes it glow under ultra-violet light
*Some minerals have electrical properties